US729310A - Ice-cream freezer. - Google Patents

Description

No. 729,310. PATENTED MAY 26, 1903. W. 0. FAWKES.

ICE CREAM FREEZER;

APPLICATION FILED NOV. 21, 1902.

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10 MODEL.

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2 SHEETS-SHEET 2.

-W. G. FAWK'ES.

'- ICE CREAM FREEZER.

APBLIOATION FILED NOV. 21. 1902.

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UNITED STATES Patented May 26, 1903.

PATENT OFFICE.

lCE-CR EA-M FREEZER;

SPECIFICATION" forming part of Letters Patent No. 729,310, dated May 26, 1903.

Application filed November 21, 1302. Serial No. 132,332. (No model.)

To all whom it may concern:

Be itknown that I, WILBERT C. FAWKES, a citizen of the United States, residing at North Chicago, in the county of Lake and State of Illinois, have invented new and useful Improvements in Ice-Cream Freezers, of which the following is a specification.

This invention relates to an ice v cream freezer; and the object of the invention is to, provide an effective device of this character. which 'is adapted to rapidly freeze cream with a minimum quantity of ice, the air being wholly excludedfrom such ice during said operation, and thecream can be maintained in a firm solid'condition without repacking, there being'no possibility of the salt used in freezing being mixedwith the cream.

The invention is clearly illustrated in the accompanying drawings, forming a part of this specification, and in which Figure 1 is a plan view of the improved ma- Fig. 2 is a vertical sectional elevae tion of the same. Figs. 3 and 4 are perspective views of brackets hereinafter described. Fig. 5 is a detail view of a modification.

Like characters refer to like parts in the different figures of the drawings.

The improved device includes inits construction a two-part vessel, denoted in a general way by 2, to the under side of which is fastened in some suitable manner a disk 3, which may consist of a casting and from which centrally depends the rigid verticallydisposed short shaft 4. Said shaft 4 extends through a hub or sleeve 5, formed centrally of the body 6. This body has a horizontal upper portion 7, provided with an upwardlyextending circumferential flange 8, the pur pose of which will hereinafter appear.' The sleeve or hub 5 extends above and below the horizontal portion 7 of the body'and is provided in'its upper side with an'annular runway 9 for the antifriction-balls 10, which sustain the disk 3.

The stub-shaft 4 carriesatits ibwrene the band-wheel 11 or some analogous driven member adapted to beoperated by some convenient form of motor, (not 'shown,) antifric tion-balls 12 being interposed between the band-wheel 11 and the lower end of the sleeve or hub 5 and serving, like the other balls 10, their usual purpose. When the shaft-4 is roupon the flange 8.

I tat-ed by driving the band-wheel ll, the twopart vessel 2 will be correspondingly. rotated, and this rotation may be in either direction. The driven memberll, in connection with its motor, constitutes a means for positively rotating the vessel 2. I may rotate said vessel manually, as will hereinafter appear.

I A tube 13 extends through a perforation in the bottom of the vessel 2, and its lower end is tapped into the disk 3, said tube being pro vided with a circular flange 14 adjacent tothe upper side of the bottom of the receptacle, and a gasket 15 of suitable material is fitted between said flange and said bottom. Said tube 13 is of a height sufficient to prevent liquid from being thrown intoits upper open 7 end during the agitation'of the contents of the vessel, and the flange 14, in connection with the gasket 15, serves to prevent the escape of said liquid at the lower end of said tube." A shaft 16 'extendsentirely through and beyond the opposite ends of the tube 13, said shaft fixedly carrying a pinion 17 at its lowerv end meshing with internalv teeth 18 I As thetwo-part vessel 2 rotates, the pinion'17 will be caused to revolve therewith, and its teeth being in mesh with the teeth 18 of the flange 8 said pinion will be caused to rotate in a direction opposite to that of the vessel, it being understood a may be secured to a suitable support (not Y shown) by means of screws or otherwise. The .said support may, if desired, consist of legs connected with the respective arms.

The agitator is denoted in a general way by 20, and it includes in its make-up th e elongated tubular body 21, hearing at a suitable point in its height against the tube 13 to steady the same, and it has a closed upper end perforated to receive the square upper end of the shaft 16, whereby upon the rotation of the vessel 2 in the manner hereinbefore described said agitator through the intermediate connections is caused to rotate in a directionbpposite to that of said vessel. The tubular body 21 may have a solid wall, as shown in Fig. 2, or said wall may be slotted from its lower edge to nearly its top, as shown by Fi 5. The tubular body 21 extends nearly to the bottom of the vessel 2 and is provided at suitable points in its height with the oppositelydisposed radial agitating-arms 22, which are beveled upon their upper sides for a purpose that will hereinafter appear.

The vessel 2 comprises concentric receptacles 23 and 24, having a common dividing-wall and bottom, the latter having an air-space 23' to insulate the contents of the vessel from the atmosphere. Into the space between these receptacles a refrigerant can be introduced, the upper side of the space being covered, as at 25, and the covering having a removable cap 26, by which the refrigerant can be introduced between the two receptacles. A tube 27extends outward from the inner receptacle through and beyond the outer one and is provided with a plug 28, which can be taken out when it is desired to drain the inner receptacle in which the cream is frozen, and the outer receptacle has an opening to receive a plug 28, which can be taken out when it is desired to withdraw the contents of the outer receptacle.

In freezing cream a refrigerant, such as crushed ice and salt, is placed in the space between the inner and outer receptacles 23 and 24, and as such refrigerant rotates with the two-part vessel 2 no friction between these two parts during the freezing operation occurs, by reason of which the agitation can be kept up for a considerable length of time without undue exertion and friction in order to secure a smooth desirable product. After the ice-cream is frozen the agitator can be readily removed and a covering fitted over the inner receptacle, and the cream can be kept in a firm condition ready for use without being repacked. Besides this, there is no possibility of the salt or brine mixing with said cream. As the air cannot come in contact with the ice, freezing of the cream can be effected rapidly bya comparatively small quantity of such substance.

The upper and lower agitating-arms 22 upon the opposite sides of the tubular body 21 are provided upon their upper sides with pintles 30, adapted to freely enter perforations in horizontal flanges 31 upon the inner sides of superposed brackets 32, fastened to the scraper-blades 33, it being understood that the blades 33 are supported for oscillation by the respective arms, so that either of the opposite beveled edges of said blades can travel in contact with the inner surface of the wall of the inner receptacle in accordance with the direction that the agitator 20 is rotating. The upper bracket 32 in each case is provided with a stop 34, consisting of a substantially segmental lug, which normally secures the blade in place, as in case said blade should be lifted during freezing the stop or lug 34.-

will strike the under side of the adjacent agitating-arm 22 and prevent the dismounting of said bladethat is to say, when the blades are in their working positions in the vessel and at an angle to the agitating-arms the stops when the blades have been lifted an imperceptible degree come against the upper agitating-arms, so that such blades cannot be disconnected from the agitator. When, however, the agitator as a whole is lifted from the vessel, the blades may be swung around parallel to the agitating-arms 22, so that the said blades can be lifted free of the agitating-arms.

The upper edge of the vessel is provided at a suitable point with a handle 40, by which said vessel can be manually operated, if desired. I may of course rotate the vessel by power, means having been hereinbefore disclosed for this purpose, or the same result can be accomplished by hand through the agency of the handle 40. When, however, the handle is employed, the vessel 2 is simply given an oscillatory or back-and-forth motion, the same motion being transferred through the intermediate mechanism to the agitator 20, and I find that the hand operation of such parts is a satisfactory one.

The device may be used with equal advantage for other purposes, having been found wholly satisfactory as a churn. In this case, however, the scraping-blades 33 will not be employed. The agitator, however, is used. It will be remembered that the upper sides of the agitating-arms 22 have been described as being beveled. In the case of churning these beveled edges will not break the butter-globules, but will force the same toward the top of the agitator, where they can collect. In churning of course the space between the concentric receptacles 23 and 24 will be filled with hot or cold water, hot water being employed during winter and cold water during summer, so that the milk will be properly tempered during churning.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machine of the class described, the combination of a vessel, a shaft extending through said vessel, a pinion carried by the lower end of said shaft, a second shaft rigidly carried by and depending from said vessel, a body rotatively sustaining said second shaft and provided with a circumferential flange having internal teeth adapted to mesh with said pinion, a tube in said vessel surrounding said first-mentioned shaft, and an agitator carried by the latter.

2. In a machine of the class described, the combination of a vessel, a shaft extending through said vessel, a pinion carried by the lower end of the shaft, a second shaft rigidly carried by and depending from the vessel, 9. body rotatively sustaining said second shaft and provided with a circumferential flange having internal teeth adapted to mesh with said pinion, a tube surrounding said firstmentioned shaft and rigidly connected at its lower end with the bottom of said vessel, the upper end of the tube extending short of the upper end of said shaft, and an agitator in the vessel consisting of a substantially tubular body surrounding said tube and provid'ed with agitating-arms, the upper end of the tubular body being rotatively connected with the upper end of said shaft.

3. In a machine of the olassdescribed, the combination of a vessel, a shaft extending through said vessel, a pinion carried by the lower end of the shaft, a second shaft rigidly carried by and depending from the vessel, a body rotatively sustaining said second shaft and provided with a circumferential flange having internal teeth'adapted to mesh with said pinion, a tube surrounding said firstmentioned shaft and rigidly connected at its lower end with the bottom of said vessel, the upper end of the tube extending short of the upper end of said shaft, an agitator in the vessel consisting of a substantially tubular body surrounding said tube and provided with agitating-arms, the upper end of the tubular body having a square perforation, and the upper end of the shaft having a square projection fitted in said perforation whereby the agitator is rotatively connected with the shaft, and scraping-blades adapted to travelagainst the inner surface of the vessel and detachably connected with the agitator.

4. In a machine of the class described, the combination of a vessel, a rotary shaft in said vessel, an agitator carried by said shaft and consisting of a body provided with arms, pintles carried by certain of the arms, scrapingblades provided with brackets having perforations to receive said pintles, and said brackets having lugs upon their under sides constituting stops and adapted to engage the under sides of the adjacent arms during the normal operation of the machine.

In testimony whereof I have hereunto set 'my hand in presence of two subscribing wit- HGSSGS.

WILBERT O. FAWKES.

Witnesses:

S. DELANO TALOOTT, LESLIE P. HANNA.

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